package demo;
class Calculator {
    private int num1;
    private  int num2;

    public int getNum1() {
        return num1;
    }

    public void setNum1(int num1) {
        this.num1 = num1;
    }

    public int getNum2() {
        return num2;
    }

    public void setNum2(int num2) {
        this.num2 = num2;
    }
    public int add(){
        return num1+num2;
    }
    public int sum(){
        return num1-num2;
    }
    public int mul(){
        return num1*num2;
    }
    public double dev(){
        return num1*num2;
    }
}
public class TestDemo{
    public static void main(String[] args) {
        Calculator calculator=new Calculator();
        calculator.setNum1(5);
        calculator.setNum2(10);
        System.out.println(calculator.add());
        System.out.println(calculator.dev());
        System.out.println(calculator.mul());
        System.out.println(calculator.sum());
    }

}

